Sill-brace for metallic window-frames.



No; 933,323. v BATENTED 001. 16, 1906.

' T, LEE.

SILL BRAGB FOR METALLIC WINDOW FRAMES. APPLIOATIOL' rmm In 12. mos.

5 vented a certain new and useful Sill-Brace l 10 with the reference characters marked thcreintended purpose, the sills UNITED STATES PATENT THOMAS L E. or IioME o TY, SILL-BHAOE FOR orrroa. OHIO. METALLIC WINDQVlI-FRAMES-z Specification of Letters Patent. Patented Oct. 16, 1906.

Application filed May 12, 1906. Serial No. 316,473

To all whom it litany concern:

Be it known that l, THOMAS LEE, a'citizen of the United States, esiding at Home u State of Ohio, l

Fig. 2 is a vertisill as shown in Fig. I.

, provided by my invention. cal cross-section ofthe City, 5 Fig. 3 is a rear view rave inl A indicates the lower part right members ofthe frame. for Metallic Window-Frames; and I do deis the sill shown as ofconventional g to be a clear, full, and exl shape, 6 being the seat for the lower sash (not attention shown) and is usually higher and above the being called to the accompanying drawin other part of the sill, producing an offset 72. In the form of sill shown six longitudinal edges or corners result, which are liable to lose their s ape unless stiffened b which brace the sill shape. a brace C, which of one of the upon, which form also ion. I This invention relates to-improvements in windowaines consisting of hollow structures made of sheet metal. i uch frames are generally used in connecl tion with fireproof or fire-retarding windows. d While they possess sullicient rigidity for the l of such frames are in ury in various ways and from ressure-as, for 'istance, ifstepped reason of insufficient resisth1s specilicaconsist substantialclly d against all corners of the being supported itself by its front exposed to external collapse. this difficulty is to fill s or concrete. The objections to this method are the hygroscopic properties of such 1naterial, which draws and retains-moisture and. does not readily dry out when. so incased, all

' posed in a This sill-brace is metal, a cheap gra e-of cast-iron b cient, since outside of sufficient stiffness and rigidity noother ualifications are required.

of which is detrimental to the surrounding The thickness of t lis metal should therefore metal. Co siderableotherwiseuseless weight e limited to merely meet these requ1re- Is also added, which has to be handled durin manufacture, transportation, and setting u of these frames. most potent objection is, f1 irther, that such material if drying, shrinks considerable, thus leaving the upper part of, t n: sills unsupported, particularly at the edges, so. that the most important intended unciionto preserve the shape, particularly at such edges, is lost, and nicks and dents re sult. -My invention provides means which overcome these objections, are not unnecessarily heavy, and are fitted to the shape of I the sills, which they fill perfectly and completely and which fit remains permanent.

I l n the following specihcatum, and particu- I I satisfied by providing openings and cut-outs atsuch places where the absence of metal will notinterfere with the principal function ofthe device as a brace. ms 0 )enings c arev vided in the upper part of the outs or recesses (Z and e respectively. inde endent skeleton frame which is devoid of a unnecessary metal and weight, .but preserves wherever necessary all corners and edges intact. As to length these braces may" come, preferably, in units of suitable, but limited lengths, to permit-building up of the rerace and cutin front and rear sides,

ar y pointed out in the claims at the end quired lengthto fill as1ll,1nto which theyare t icreof, is found a full description of my inshoved end'wise oneafter the other,.the sills vention and the construction of the same, i being of course made to fit closely around the which latter is also illustrated in the acconi- I braces, unless, however, a large number of l anying' drawings, in wluch--- igure 1 shows in perspective view a porion of the lower part of a hollow sheet-metal Jindow-frame, 1t being the lower part ofone fthe'upright members and a p )inin'g' sill, the latter .contaiinng the means sills has to be filled which are all of equal length, in which case the braces may all be of one length of the par Another advantage of such an skeleton frame is that it'may be broken crosswise, the arrangement 0 open-work r d y being fitted against the ung ments to save metal and to reduce weight, and

PTO-- 1e resultant structure is an 5 skeleton .frerne me to tileted, this openings 1.0,an'd e, trensvers'eiy slined, fe-

such breakage lengths. At the ends and eiso, if neeessery, at suitable intermediate points this be strengthened by transversely exten ing Webs. Wherever such fillings may of course be also for the upright members of e win- Where window-her es ere venfilling does not interfere with grovide oW-freme.

such ventiletion.

Having described my invention ii claim as new 1. A brace for the hollow rnenaoers of a metallic window-frame, consisting of en open- Work, oustfnetel skeleton freme fit'l-ed to fill such member.

2. A brace for the hollow sill of metallic windowdreme, consisting of en open-work, oust-metal skeleton mine fitted to fill such a sill so as to sustain the corners end edges thereof.

and permits snaking up 3. sill-brace for the hollow sillsof Inetellic window-frames, consisting of an 11 per part which is fitted sgeinst the under si eof the upper art of the sill and of front and rear s1 es w 'oh sup ort such u per pert en are fitted respective y against out and rear sides of the sill all extending froinone end of the sill to the other.

4. A sill-brace for hollow sills of metallic window-frames, consistingof an up er pert provided with perforations end fitte against the under side of the upper part of the sill and of .front and rear sides which su port such upper part and are provided wit ,cutouts.

In testimony whereof I hereunto eflix my signature in presence of two witnesses.

THOMAS LEE. Witnesses:

C. SPENGEL, T. LE BEAU. 

